The Computer

A computer is a machine that can store and process information. Most computers rely on a binary system that uses two variables, 0 and 1, to complete tasks such as storing data, calculating algorithms, and displaying information. Computers come in many different shapes and sizes, from handheld smartphones to supercomputers weighing more than 300 tons.

Computer CPU

The computer's central processing unit (CPU) is the portion of a computer that retrieves and executes instructions. The CPU is essentially the brain of a CAD system. It consists of an arithmetic and logic unit (ALU), a control unit, and various registers.

   (LCD)

                             (LCD)

A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly, instead using a backlight or reflector to produce images in color or monochrome.

Keyboard

Keyboard

A computer keyboard is an input device that allows a person to enter letters, numbers, and other symbols (these are called characters in a keyboard) into a computer. It is one of the most used input devices for computers. ... A keyboard contains many mechanical switches or push-buttons called "keys"

Mouse

Mouse

1. 1.

   a small rodent that typically has a pointed snout, relatively large ears and eyes, and a long tail.
2. 2.

   a small handheld device which is moved across a mat or flat surface to move the cursor on a computer screen.
3. 
   

4. Speaker

5. 

   
   

   Speaker
    Speakers are one of the most common output devices used with computer systems. Some speakers are designed to work specifically with computers, while others can be hooked up to any type of sound system. Regardless of their design, the purpose of speakers is to produce audio output that can be heard by the listener.

7.